Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/131740
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Type: Journal article
Title: Probing loop effects in wrong-sign Yukawa coupling region of Type-II 2HDM
Author: Su, W.
Citation: European Physical Journal C: Particles and Fields, 2021; 81(5):1-11
Publisher: Springer Science and Business Media LLC
Issue Date: 2021
ISSN: 1434-6044
1434-6052
Statement of
Responsibility: 
Wei Su
Abstract: In the framework of 2HDM, we explore the wrong-sign Yukawa region with direct and indirect searches up to one-loop level. The direct searches include the latest H/A→ff¯,VV,Vh,hh reports at current LHC, and the study of indirect Higgs precision measurements works with current LHC, future HL-LHC and CEPC. At tree level of Type-II 2HDM, for degenerate heavy Higgs mass mA=mH=mH±<800 GeV, the wrong-sign Yukawa regions are excluded largely except for the tiny allowed region around cos(β−α) ∈ (0.2,0.3) under the combined Higgs constraints. The excluded region is also nearly independent of parameter m12 or λv2=m2A−m212/ (sinβcosβ). The situation changes a lot after including loop corrections to the indirect searches, for example mA=1500~GeV, the region with λv2<0 will be stronger constrained to be totally excluded. Whilst parameter space with λv2>0 would get larger survived wrong-sign region for mA=800 ~GeV compared to it at tree level. We also conclude Higgs direct searches works better on constraining λv2≈0 GeV range than theoretical constraints. We also find that the loop-level wrong-sign Yukawa limit only occurs at mass decoupling scale.
Rights: © The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecomm ons.org/licenses/by/4.0/. Funded by SCOAP3.
DOI: 10.1140/epjc/s10052-021-09201-w
Grant ID: http://purl.org/au-research/grants/arc/DP180102209
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Physics publications

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